User rating5 / 5

Castle Builder slot from Microgaming

Castle Builder slot from MicrogamingThe noble castle construction is one expensive undertaking. Medieval building requires many workers, building materials like stone, clay soil, mortar, oak trees, traditional techniques, and years of planning to shape up, put together and forge from scratch an epic stronghold or royal residence. Dedicated to such an ambitious project is the Castle Builder slot machine. We advise you to try the Thunderstruck Wild Lightning slot by Microgaming for free.

Low-Medium Volatility, an RTP of 96.47%, level-based slot/production that Microgaming released/distributed in 2014 (the actual developer is RABCAT Studio), is trying to engage the players more for entertainment than for huge payouts. Therefore, this is a game with a 5x3 grid and 15 fixed pay lines, without Free Spins and multipliers from a technical point of view. 

Instead, the developers embellished the game with B/L/W - Build/Love/Win features:

  • Build - Completing any of the 35 different castles/palaces construction. Discovering 3 medieval kingdoms.
  • Love - Matchmaking the most beautiful princesses with 100+ mighty kings, princes, and other worshipers.
  • Win - Receiving 30+ rank-up medals and badges, plus 10+ rewarding achievements.
    Try your building skills now for free in the DEMO mode right here on our site. No signup is required.

Best no deposit bonus free spins at online casinos Canada

In this paragraph, we will introduce you to the best Canadian online casino promotions about no deposit bonuses in the form of free spins. You will just need to register in the following casinos to get your free bonus. In the first place, we recommend you the most trusted casino - get your 15 free spins (no deposit bonus) at Fastpay Casino and enjoy super-fast withdrawals. Our second offer is to click here and grab 15 free spins (no deposit bonus) for sign up at Casino4U - enjoy problem-free payouts. The third recommended online casino offer is to go to Instantpay Casino and get 15 free spins without any deposit, just for registration - they will send the winnings instantly. At last but not least is to get 15 free spins casino no deposit bonus at Wildblaster - they will offer perfect customer support and fast payouts.

Personal testers’ opinion about Castle Builder slot

Castle Builder is a super high-quality game with an exciting storyline, intriguing levels, and possibilities to explore new adventures along with the central characters. Naturally, because this is one blend of acting and betting with low risks, you will certainly appreciate the Castle Builder slot machine if you are a player with a small budget. So, playing mainly for fun, you could extend your gameplay with lots of minor but recurring wins without the discomfort of making super-hazardous decisions. The pay combinations are dropping as frequently as 68.83% of the rounds. That will say that almost 70 from 100 spins will bring some payout. According to statistics, the recurrence of triggering the bonus feature is 1.62%, i.e. after every 62 spins. On the other hand, only 16% of the prize pool is reserved for bonuses. The short cycle and the low variance of the game secure the balance, which is good news for the bonus hunters. They can try to complete the requirements, as Castle Builder scored 5.5 (out of 10) points on the wagering index board.

Hidden parameters and settings of Castle Builder slot (data from the testing team)

  • The frequency of triggering the bonus is statistically, every 62nd spin (1,62%).
  • The probability of a hit (any winning) is 68,83%.
  • The distribution of the winnings is 84% in the usual spins and 16% in the bonus feature.
  • The maximum payout during the tests was 70x.
  • The average winning from the bonus was 23x.
  • Volatility is 5,63 out of 20 (from low to average).
  • Cycle length is from short to average.
  • The rating of the slot machine for the wagering is 5.5 out of 10.
  • RTP of 96.47% allows getting a positive mathematical expectation at the casino.

Gameplay and bonus functions

There are 3 stages and 4 types of symbols at this slot: Royal symbols, Treasure symbols, Building symbols, and Wilds (check at the bottom of our article their description).

Stage 1: Build

  • By spinning the reels, you will start building your first castle. Then, by collecting building materials - you supply the constructor (Wild symbol- Old builder) to perform the job. 
  • Every bulk of materials you gather is indicated in the building meter (upper left corner), showing the progress of your construction. 
  • Evidently, the more building material coming on the pay lines (left to right) on the reels, the quicker you will have the castle ready. 
  • The materials are of distinct quality (standard, bronze, silver, and gold, depending on 2x, 3x, 4x, or 5x materials per win line are dropped). 
  • You most certainly need to build with better materials to make your castle worthy, flashy, and desirable by potential candidates. Plus, with hitting more gold materials, your bonus amount will be larger for the next stage of the game.
  • However, you should not only be focused on the building, as the royal and treasure symbols dropping on the pay lines are better paid, and while on the left, the whole construction is ongoing, these symbols are what make your balance move in the main spins.

Stage 2: Love

  • You helped to build the castle, and now that it is finished, the Princess settles there. The potential admirers, who begin arriving even when the castle was not ready yet, will be competing for the Princess’s heart. You will be the matchmaker choosing the right suitor. Here via the Pick and Click function, you will have to select among 3 options. Unfortunately, you don't know what amount is hidden behind the picture of each suitor.

Stage 3: Win rank

  • With each finished building, you will advance in rank, and each next level will secure better building symbols on the reels; hence every next castle will be more valuable and lavish. There are 3 separate medieval worlds you can discover, with a variety of settings and projects to build.


  • Number of reels - 5
  • Number of pay-lines - 15
  • Cost of one coin - from 0.01 to 1
  • The size range of rates is from 0.01 to 15
  • The maximum winnings are x20000
  • Wild symbol - yes
  • RTP is equal to 96.47%

Where to play?

  • Do you want to play the Castle Builder slot at the best Canadian online gambling place? Then Fastpay Casino is the best choice for you. They offer over 5300 casino slot games as well as super-fast and no-hassle withdrawals.

You may also like the following slots in Fun mode

Play all casino games for free

Written by Kamen Valev
Add comment